Parent Layer: Summer Whale Density

Name: Sperm Whale (Physeter macrocephalus)

Display Field: PMA_I_U_D

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Description: These data show information from 16 ship-based assessment surveys by the Southwest Fisheries Science Center from 1986-2006. Predicted annual densities were smoothed into a continuous grid of density estimates for the surveyed area. Annual grids were averaged and represent the best estimate of Sperm Whale density in Washington over the past 20 years. Sperm whales tend to inhabit areas with water depth of 1968 feet or more and are uncommon in waters less than 984 feet deep. No critical habitat has been designated for the species and they inhabit all oceans of the world. Distribution is dependent on food sources and suitable breeding conditions. The California, Oregon, Washington stock are found year-round in California waters and are seen almost every month of the year in Washington and Oregon waters. Sperm whales remain the most abundant of the large whale species with estimates from NOAA's Office of Protected Resources range between 200,000 and 1.5 million in the world. Sperm whales were listed as endangered in 1970 (35 FR 18319).

Service Item Id: 909c1789ef844b15a896c87f395cb78a

Copyright Text: Duke Univ/NOAA SWFSC

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